Probably. But it won't trigger disk access. You can check that:
for i in `seq 5`; do echo 123 > f; rm -f f; grep sda1 /proc/diskstats; done
(replace "sda1" with the disk you write to)
If file creation/deletion (metadata change) triggers disk access you'll see all the lines different. But if lines are same, then there was no disk access.
Cache still works for journaled filesystems. Linux kernel is written by smart people, yeah.
PS: I've seen reiserfs to trigger "read" in such test. You can see description of diskstats numbers in:
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